Claim CB902.1:

Evolutionists claim that biological evolution is extrapolated from the
minor variations we observe. They ignore that there are barriers to large
change.

Source:

Morris, John D., 2003. Dating Niagara Falls. Impact
359 (May), p. iv.

Response:

What barriers? The only barrier that anyone has ever proposed is time,
and the hundreds of millions of years available for evolution show that
time is not a real barrier.

Evolution is not just extrapolated from observed microevolution; it is
also interpolated from observed changes in the fossil record and from
the pattern of observed similarities and differences between present
species.